Hi, When I Tap On The Right Side Of Head
Hello and welcome to Ask A Doctor service.
The symptom that you have mentioned is called as tinnitus. It could be due to abnormal neuronal (brain cell) activity in the auditory pathway. It could also be coming from blood vessels or from bone structures.
A physical examination by a ear, nose and throat specialist is needed to find cause. He may use tests including tests with tuning fork, pure tone audiometry, etc
Meanwhile avoid noises. Many people find relief with this measure. Avoid tapping on right side behind ear.
There are many other methods of treatment.
Hope this helps. Let me know if I can assist you further.